C#winform如何传值给http串口数据呢？要传的数据在textbox里面！

Question

这是我这里HTTP串口打开的数据，msg是我要传入的数据！
{"code":0,"msg":"请输入正确的参数","time":"1635835468","data":null}

然后我的代码这么写，再打开http并没有什么变化！
想把textbox上的数据传过去

            string serviceAddress = "我的网址";
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(serviceAddress);

            request.Method = "POST";
            request.ContentType = "application/json";
            string strContent = @"{ ""msg"": ""没什么""}";
            using (StreamWriter dataStream = new StreamWriter(request.GetRequestStream()))
            {
                dataStream.Write(strContent);
                dataStream.Close();
            }
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            string encoding = response.ContentEncoding;
            if (encoding == null || encoding.Length < 1)
            {
                encoding = "UTF-8"; //默认编码  
            }
            StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding(encoding));
            string retString = reader.ReadToEnd();
            //解析josn
            JObject jo = JObject.Parse(retString);
            textBox11.Text = (jo["time"].ToString());

Answer 1

经过我的测试，你提供的代码是可以正确发送请求。
看看你使用的JSON数据能否被正确解析。

JObject json = JObject.Parse(strContent);

另外当你使用其他网址时是否能接受到数据?